This is much the same problem I have with Orthodox street preaching (And I do know some Orthodox street preachers, people like the willard preacher). Sometimes it's best not to offend people when on shared ground, This site does not belong to the Orthodox, nor was it created for us (that's why we have TAW).
I think of it this way, If what I say can turn someone away from the faith before they ever see the faith, I probably shouldn't say it. If someone is inquiring about Orthodoxy I will tell things how they are, but if nowone is asking I just try to live my life in an Orthodox manner. If I live that way, I can hope someone may look at me and wonder what makes me so special. That they will see the grace of God in me. I usually fail at this, but I can try.
I may be wrong, but sometimes people arn't ready to hear the whole Truth. It's best not to give it all at once. People will be judged on the level of Truth they knew, and we shouldn't give them more than they can handle if they don't ask for it.
My 2 cents
In Christ,
Reader Nikolai